Genghis.JSON = {
    parse: function(src) {
        if (typeof src !== 'string') {
            src = String(src);
        }

        src = 'var __genghis_json__ = ' + src;

        var opts = {
            loc:      true,
            raw:      true,
            tokens:   true,
            tolerant: true,
            range:    true
        };

        var allowedCalls = {
            'ObjectId': true,
            'Date':     true,
            'ISODate':  true,
            'DBRef':    true,
            'RegExp':   true,
            'BinData':  true
        };

        var allowedPropertyValues = {
            'Literal':          true,
            'ObjectExpression': true,
            'ArrayExpression':  true,
            'NewExpression':    true,
            'CallExpression':   true,
            'UnaryExpression':  true
        };

        var errors = [];

        function addError(msg, node) {
            // only add one error per node
            if (!node.error) {
                error      = new Error(msg);
                error.loc  = node.loc;
                error.node = node;
                node.error = error;
                errors.push(error);
            }
        }

        function throwErrors(errors) {
            var error = new Error('' + errors.length + ' parse error' + (errors.length === 1 ? '' : 's'));
            error.errors = errors;
            throw error;
        }

        function replaceCallExpression(src) {
            function ObjectId(id) {
                return {
                    '$genghisType': 'ObjectId',
                    '$value': id ? id.toString() : null
                };
            }

            function GenghisDate(date) {
                return new ISODate(date);
            }

            function ISODate(date) {
                function ISODateString(d) {
                    function pad(n, l) {
                        l = l || 2;
                        return (new Array(l + 1).join('0') + n).substr(0 - l);
                    }

                    function msString(ms) {
                        return ms ? ('.' + pad(ms, 3)) : '';
                    }

                    d = new Date(d);

                    if (typeof d.toISOString === 'function') {
                        // Cheat code for ES5
                        return d.toISOString();
                    } else {
                        return pad(d.getUTCFullYear(), 4)+'-'
                            + pad(d.getUTCMonth()+1)+'-'
                            + pad(d.getUTCDate())+'T'
                            + pad(d.getUTCHours())+':'
                            + pad(d.getUTCMinutes())+':'
                            + pad(d.getUTCSeconds())
                            + msString(d.getUTCMilliseconds())+'Z';
                    }
                }

                return {
                    '$genghisType': 'ISODate',
                    '$value': date ? ISODateString(date) : null
                };
            }

            // DBRef isn't so much a custom type as it is a hash factory...
            // we won't bother using a $genghisType for this one.
            function DBRef(ref, id) {
                return {
                    '$ref': ref,
                    '$id':  id
                };
            }

            function GenghisRegExp(pattern, flags) {
                return {
                    '$genghisType': 'RegExp',
                    '$value': {
                        '$pattern': pattern ? pattern.toString() : null,
                        '$flags': flags ? flags.toString() : null
                    }
                };
            }

            function BinData(subtype, base64str) {
                return {
                    '$genghisType': 'BinData',
                    '$value': {
                        '$subtype': subtype,
                        '$binary': base64str
                    }
                };
            }

            // Replace Date and RegExp calls with a fake constructors
            src = src.replace(/^\s*(new\s+)?(Date|RegExp)(\b)/, '$1Genghis$2$3');

            // TODO: not this :)
            return JSON.stringify(eval(src));
        }

        function replaceRegExpLiteral(value) {
            var flags = '';

            if (value.global) {
                flags = flags + 'g';
            }
            if (value.multiline) {
                flags = flags + 'm';
            }
            if (value.ignoreCase) {
                flags = flags + 'i';
            }

            return replaceCallExpression('GenghisRegExp(' + JSON.stringify(value.source) + ', "' + flags + '")');
        }

        var chunks = src.split('');

        function insertHelpers(node) {
            if (!node.range) return;

            node.source = function () {
                return chunks.slice(node.range[0], node.range[1]).join('');
            };

            if (node.update && _.isObject(node.update)) {
                var prev = node.update;
                Object.keys(prev).forEach(function (key) {
                    update[key] = prev[key];
                });
                node.update = update;
            } else {
                node.update = update;
            }

            function update (s) {
                chunks[node.range[0]] = s;
                for (var i = node.range[0] + 1; i < node.range[1]; i++) {
                    chunks[i] = '';
                }
            }
        }

        var ast;
        try {
            ast = esprima.parse(src, opts);
        } catch (e) {
            throwErrors([e]);
        }

        if (ast.errors.length) {
            throwErrors(ast.errors);
        }

        function assertType(type, node) {
            if (node.type !== type) {
                addError('Expecting ' + type + ' but found ' + node.type, node);
            }
        }

        // remove a couple of things first :)
        var node;

        node = ast;
        assertType('Program', node);

        node = node.body;
        if (node.length !== 1) {
            addError('Unexpected statement ' + node[1].type, node[1]);
        }

        node = node[0];
        assertType('VariableDeclaration', node);

        node = node.declarations;
        if (node.length !== 1) {
            addError('Unexpected variable declarations ' + node.length, node[1]);
        }

        node = node[0];
        assertType('VariableDeclarator', node);

        node = node.init;
        if (node.type !== 'ObjectExpression') {
            addError('Expected an object expression, found ' + node.type, node);
        }

        if (errors.length) {
            throwErrors(errors);
        }

        (function walk(node) {
            insertHelpers(node);
            Object.keys(node).forEach(function (key) {
                var child = node[key];
                if (Array.isArray(child)) {
                    var result = [];
                    child.forEach(function (c) {
                        if (c && typeof c.type === 'string') {
                            walk(c);
                        }
                    });
                } else if (child && typeof child.type === 'string') {
                    insertHelpers(node);
                    walk(child);
                }
            });

            switch (node.type) {
                // Explicitly whitelist call expressions
                case 'NewExpression':
                case 'CallExpression':
                    if (node.callee && !allowedCalls[node.callee.name]) {
                        addError('Bad call, bro: '+node.callee.name, node);
                    } else {
                        node.update(replaceCallExpression(node.source()));
                    }
                    break;

                // Property value has to be an array, object, literal, or a whitelisted call
                case 'Property':
                    if (node.value && !allowedPropertyValues[node.value.type]) {
                        addError('Unexpected value: ' + node.value.source(), node.value);
                    }
                    break;

                // We like these :)
                case 'Identifier':
                case 'ArrayExpression':
                case 'ObjectExpression':
                case 'UnaryExpression':
                    break;

               // Normally literals get a pass
                case 'Literal':
                    // ... but a literal RegExp should be thunked into a "new" expression
                    if (_.isRegExp(node.value)) {
                        node.update(replaceRegExpLiteral(node.value));
                    }
                    break;

                // Deny by default
                default:
                    addError('Unexpected '+node.type, node);
                    break;
            }
        })(node);

        if (errors.length) {
            throwErrors(errors);
        }

        return (function(node) {
            var __genghis_json__;
            eval('__genghis_json__ = ' + node.source());
            return __genghis_json__;
        })(node);
    },

    stringify: function(value, pretty) {
        return jQuery('<div>' + this.prettyPrint(value, pretty, false) + '</div>').text();
    },

    prettyPrint: function (value, pretty, autoCollapse) {
        // This function borrows heavily from json2.js, a project in the public domain.
        //
        // See See http://www.JSON.org/js.html

        autoCollapse = (autoCollapse !== false);

        function JsonView(value) {

            var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
            var escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
            var linkable = /^https?:\/\/[^\s]+$/;
                // from http://mothereff.in/js-variables
            var identifierStart = '$A-Z_a-z\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc';
            var identifierPartExclusive = '0-9\u0300-\u036f\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u08e4-\u08fe\u0900-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09cb-\u09cd\u09d7\u09e2\u09e3\u09e6-\u09ef\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\u0d02\u0d03\u0d3e-\u0d44\u0d46-\u0d48\u0d4a-\u0d4d\u0d57\u0d62\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0e50-\u0e59\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e\u0f3f\u0f71-\u0f84\u0f86\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u102b-\u103e\u1040-\u1049\u1056-\u1059\u105e-\u1060\u1062-\u1064\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b4-\u17d3\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u18a9\u1920-\u192b\u1930-\u193b\u1946-\u194f\u19b0-\u19c0\u19c8\u19c9\u19d0-\u19d9\u1a17-\u1a1b\u1a55-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1b00-\u1b04\u1b34-\u1b44\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1b82\u1ba1-\u1bad\u1bb0-\u1bb9\u1be6-\u1bf3\u1c24-\u1c37\u1c40-\u1c49\u1c50-\u1c59\u1cd0-\u1cd2\u1cd4-\u1ce8\u1ced\u1cf2-\u1cf4\u1dc0-\u1de6\u1dfc-\u1dff\u200c\u200d\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua620-\ua629\ua66f\ua674-\ua67d\ua69f\ua6f0\ua6f1\ua802\ua806\ua80b\ua823-\ua827\ua880\ua881\ua8b4-\ua8c4\ua8d0-\ua8d9\ua8e0-\ua8f1\ua900-\ua909\ua926-\ua92d\ua947-\ua953\ua980-\ua983\ua9b3-\ua9c0\ua9d0-\ua9d9\uaa29-\uaa36\uaa43\uaa4c\uaa4d\uaa50-\uaa59\uaa7b\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uaaeb-\uaaef\uaaf5\uaaf6\uabe3-\uabea\uabec\uabed\uabf0-\uabf9\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f';
            var regexIdentifier = RegExp('^[' + identifierStart + '][' + identifierStart + identifierPartExclusive + ']*$');
            var regexES51ReservedWord = /^(?:do|if|in|for|let|new|try|var|case|else|enum|eval|false|null|this|true|void|with|break|catch|class|const|super|throw|while|yield|delete|export|import|public|return|static|switch|typeof|default|extends|finally|package|private|continue|debugger|function|arguments|interface|protected|implements|instanceof)$/;
            var gap = '';
            var indent = (pretty === false) ? '' : '    ';
            var meta = {    // table of character substitutions
                '\b': '\\b',
                '\t': '\\t',
                '\n': '\\n',
                '\f': '\\f',
                '\r': '\\r',
                '"' : '\\"',
                '\\': '\\\\'
            };
            var entities = { // table of html entities
                '&': '&amp;',
                '"': '&quot;',
                '<': '&lt;',
                '>': '&gt;'
            };

            function span(classes, child) {
                return e('SPAN', classes, child);
            }

            function e(type, classes, child) {
                var el = document.createElement(type);

                if (classes) {
                    el.className = classes;
                }

                if (child) {
                    if (typeof child === 'string') {
                        child = t(child);
                    }

                    el.appendChild(child);
                }

                return el;
            }

            function t(text) {
                return document.createTextNode(text);
            }

            function quote(string) {
                var el = span('v q');
                var child;

                el.appendChild(t('"'));

                // If the string contains no control characters, no quote characters, and no
                // backslash characters, then we can safely slap some quotes around it.
                // Otherwise we must also replace the offending characters with safe escape
                // sequences.
                escapable.lastIndex = 0;
                if (escapable.test(string)) {
                    string = string.replace(escapable, function (a) {
                        var c = meta[a];
                        return typeof c === 'string' ? c :
                            '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
                    });
                }

                // link the string
                if (linkable.test(string)) {
                    child = e('A', 's');
                    child.href = string;
                } else {
                    child = span('s');
                }

                // We won't bother encoding HTML entities, since we're just slapping the whole
                // thing into a text node. Bam. Encoded.
                child.appendChild(t(string));

                el.appendChild(child);
                el.appendChild(t('"'));

                return el;
            }

            // escape a property (but only if it needs to be escaped)
            function prop(key) {
                if (regexES51ReservedWord.test(key) || !regexIdentifier.test(key)) {
                    key = '"' + key.replace(escapable, function (a) {
                        var c = meta[a];
                        return typeof c === 'string' ? c : '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
                    }) + '"';
                }

                return e('VAR', false, key);
            }

            // escape a function call
            function c(fn, values, classes) {
                var s = span('call ' + classes);

                s.appendChild(t(fn + '('));

                _.each(values, function(value, i) {
                    s.appendChild(value);
                    if (i < (values.length - 1)) {
                        s.appendChild(t(', '));
                    }
                });

                s.appendChild(t(')'));

                return s;
            }


            // Produce a string from holder[key].
            function createView(key, holder) {
                var i;          // The loop counter.
                var k;          // The member key.
                var v;          // The member value.
                var length;
                var mind = gap;
                var partial;
                var el;
                var p;
                var glue = '';
                var value = holder[key];
                var spanClass;

                // If the value has a toJSON method, call it to obtain a replacement value.
                if (_.isObject(value) && typeof value.toJSON === 'function') {
                    value = value.toJSON(key);
                }

                // What happens next depends on the value's type.
                switch (typeof value) {
                    case 'string':
                        return quote(value);

                    case 'number':
                        // JSON numbers must be finite. Encode non-finite numbers as null.
                        return span('v n', isFinite(value) ? String(value) : 'null');

                    case 'boolean':
                        return span('v b', String(value));

                    // If the type is 'object', we might be dealing with an object or an array or
                    // null.
                    case 'object':
                        // Due to a specification blunder in ECMAScript, typeof null is 'object',
                        // so watch out for that case.
                        if (_.isNull(value)) {
                            return span('v z', 'null');
                        }

                        // This is a serialized Genghis type, print it as something awesomer.
                        if (Object.hasOwnProperty.call(value, '$genghisType')) {
                            switch(value.$genghisType) {
                                case 'ObjectId':
                                    return c('ObjectId', [quote(value.$value)], 'oid');

                                case 'ISODate':
                                    return c('ISODate', [quote(value.$value)], 'date');

                                case 'RegExp':
                                    // we'll render regexp as a literal
                                    // TODO: something might need escaped here?
                                    var pattern = value.$value.$pattern;
                                    var flags   = value.$value.$flags || '';

                                    return span('v re', '/' + pattern + '/' + flags);

                                case 'BinData':
                                    return c('BinData', [span('n', String(value.$value.$subtype)), quote(value.$value.$binary)], 'bindata');
                            }
                        }

                        // Make an array to hold the partial results of stringifying this object value.
                        gap += indent;

                        // Is the value an array?
                        if (_.isArray(value)) {
                            if (value.length === 0) {
                                gap = mind;

                                return span('v a', '[]');
                            }

                            el = span('v a');

                            if (autoCollapse && gap) {
                                el.collapsible = true;

                                if (value.length > 10) {
                                    el.collapsed = true;
                                    // el.setAttribute('data-uninitialized', 1);
                                    // el.appendChild(t(JSON.stringify(value)));
                                    // return el;
                                }
                            }

                            // The value is an array. Stringify every element. Use null as a placeholder
                            // for non-JSON values.

                            el.appendChild(t(gap ? ('[\n' + gap) : '['));

                            glue = t(gap ? (',\n' + gap) : ',');

                            length = value.length;
                            for (i = 0; i < length; i += 1) {
                                if (i > 0) {
                                    el.appendChild(glue.cloneNode(false));
                                }

                                el.appendChild(createView(i, value) || span('v z', 'null'));
                            }

                            el.appendChild(t(gap ? ('\n' + mind + ']') : ']'));

                            gap = mind;

                            return el;
                        }

                        // Iterate through all of the keys in the object.
                        partial = [];

                        var cologn  = t(gap ? ': ' : ':');
                        var isDbRef = !!(value.$ref && value.$id);
                        for (k in value) {
                            if (Object.hasOwnProperty.call(value, k)) {
                                v = createView(k, value);
                                if (v) {
                                    spanClass = 'p' + (v.collapsed ? ' collapsed' : '');
                                    if (isDbRef) {
                                        if (k == '$ref' || k == '$id' || k == '$db') {
                                            spanClass = spanClass + ' ref-' + k.substr(1);
                                        }
                                    }

                                    p = span(spanClass);

                                    if (isDbRef && k == '$id') {
                                        p.setAttribute('data-document-id', Genghis.Util.encodeDocumentId(value[k]));
                                    }

                                    if (v.collapsible) {
                                        p.appendChild(e('button'));
                                    }

                                    p.appendChild(prop(k));
                                    p.appendChild(cologn.cloneNode(false));
                                    p.appendChild(v);

                                    if (v.collapsed) {
                                        child = span('e');
                                        child.appendChild(t('[ '));
                                        child.appendChild(e('Q', false, t(' …')));
                                        child.appendChild(t(' ]'));

                                        p.appendChild(child);
                                    }

                                    partial.push(p);
                                }
                            }
                        }

                        // Join all of the member texts together, separated with commas,
                        // and wrap them in braces.
                        spanClass = 'v o';

                        if (partial.length === 0) {
                            gap = mind;

                            return span(spanClass, (t('{}')));
                        } else if (isDbRef) {
                            spanClass = spanClass + ' ref';
                        }

                        el = span(spanClass);
                        el.collapsible = !!autoCollapse;
                        el.appendChild(t(gap ? ('{\n' + gap) : '{'));

                        glue = t(gap ? (',\n' + gap) : ',');

                        length = partial.length;
                        for (i = 0; i < partial.length; i++) {
                            if (i > 0) {
                                el.appendChild(glue.cloneNode(true));
                            }
                            el.appendChild(partial[i]);
                        }

                        el.appendChild(t(gap ? ('\n' + mind + '}') : '}'));

                        gap = mind;

                        return el;
                }
            }

            // Make a fake root object containing our value under the key of ''.
            // Return the result of stringifying the value.
            gap = '';

            v   = createView('_', {'_': value}).innerHTML;

            return v;
        }

        return JsonView(value);
    },

    normalize: function(value, pretty) {
        return Genghis.JSON.stringify(Genghis.JSON.parse(value), pretty);
    }
};
